CN102691829B - A kind of nano modification glass reinforced plastic sand pipe - Google Patents
A kind of nano modification glass reinforced plastic sand pipe Download PDFInfo
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- CN102691829B CN102691829B CN201210172489.1A CN201210172489A CN102691829B CN 102691829 B CN102691829 B CN 102691829B CN 201210172489 A CN201210172489 A CN 201210172489A CN 102691829 B CN102691829 B CN 102691829B
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- calcium carbonate
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Abstract
A kind of nano modification glass reinforced plastic sand pipe, comprises internal layer, burning into sand layer and skin from inside to outside successively.The present invention is by the nanometer material mixing dispersing technology of autonomous Design, the double-component nanometer material (surface treated nano silicon and nm-class active calcium carbonate mixture) of 1-8% weight is mixed in resin uniformly, obtain mixing nano-material modified resin matrix, again this resin matrix and silica sand are fully mixed, form burning into sand layer, can when non-good quartz sand graduation and lower resin content, (minimum is greater than 65Mpa to reach higher intensity and toughness, mean value is greater than 75Mpa), and reduce cost of production, reach the requirement of energy-conserving and environment-protective.
Description
Technical field
The present invention relates to fiber reinforced plastic pipe field, especially, relate to a kind of nano modification glass reinforced plastic sand pipe.
Background technique
Current glass fiber reinforced plastic sand-inclusion pipeline burning into sand layer is resin sand pulp layer (mixture of silica sand and resin), fiber reinforced plastic pipe internal layer and outer field stressed is transmitted in the effect of this layer, improve pipeline rigidity, ensure the shear strength that pipeline is certain, when avoiding product flexural property to check, stratification to occur.
The mode that existing glass reinforced plastic sand pipe adopts silica sand and resin directly to mix usually carrys out obtained burning into sand layer, although improve the performance of pipeline to a certain extent, but needing the occasion of high compression-strength and compression toughness, existing clamp sand pipe still can not meet the demands, and thus needs to design a kind of clamp sand pipe that can meet high compression-strength and the requirement of compression toughness.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of nano modification glass reinforced plastic sand pipe is provided, to improve intensity and the toughness of pipeline, can cost of production be reduced, reach the requirement of energy-conserving and environment-protective.
Object of the present invention can be taked following methods to realize:
A kind of nano modification glass reinforced plastic sand pipe, it comprises internal layer, skin and burning into sand layer, it is characterized in that: described burning into sand layer is obtained by following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain modified resin matrix;
(2) described modified resin matrix and silica sand are uniformly mixed;
Wherein, described nano silicon is obtained by following steps:
A. the impurity in silica material is removed;
B. segmented acid-adding and sustained release agent;
C. generated by granule surface contral ion and grow, destroying the interaction of silica particle surface hydroxyl, stoping particle aggregation.
Preferably, described nm-class active calcium carbonate is obtained by following steps:
A. raw limestone is calcined;
B. add water generation lime milk;
C. and then pass into carbon dioxide, carbonization lime milk generates precipitation of calcium carbonate;
D. dehydration, dry and pulverizing.
Preferably, the dispersion mixing in described step (1) comprises the following steps:
A. adopt the polar solvent of low-steam pressure described nano silicon to be dispersed into just mother liquor, more described nm-class active calcium carbonate is also disperseed to enter, form nanometer just mother liquor;
B. first for described nanometer mother liquor and resin are added in vacuum stirring tank, under vacuum conditions mixture is heated, and abundant mix and blend, polar solvent is separated out from resin, final formation resin nano mixture.
Preferably, described polar solvent is methyl alcohol.
Preferably, in described step (1), the weight percentage of nano silicon and/or nm-class active calcium carbonate is 1-8%.
Preferably, the weight resin percentage in described step (2) is 15-18%.
Preferably, the grain composition of described silica sand is according to the following ratio:
Particle size range is 10 order-20 object quartz sand particles, and quality accounting is 45%;
Particle size range is 30 order-60 object quartz sand particles, and quality accounting is 15%;
Particle size range is 70 order-80 object quartz sand particles, and quality accounting is 15%;
Particle size range is greater than 90 object quartz sand particles, and quality accounting is 25%.
Owing to present invention employs above-mentioned technical measures, make it contrast prior art to have the following advantages: by the nanometer material mixing dispersion technology in the present invention, the double-component nanometer material of 1-8% weight is mixed in resin uniformly, obtain mixing nano-material modified resin matrix, again this resin matrix and silica sand are fully mixed, form burning into sand layer, can when non-good quartz sand graduation and lower resin content, (minimum is greater than 65Mpa to reach higher intensity and toughness, mean value is greater than 75Mpa), and reduce cost of production, reach the requirement of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of nano modification glass reinforced plastic sand pipe of the present invention.
Embodiment
Implementation of the present invention is described in detail below in conjunction with embodiment.
See Fig. 1; nano modification glass reinforced plastic sand pipe of the present invention is made up of 7 Rotating fields; be respectively inside liner 1, interior circumferential winding layer 2, interior axial direction fibre layer 3, burning into sand layer 4 (i.e. nano modification resin sand pulp layer), outer axial layer of fibers 5, outer circumferential winding layer 6, external protection 7 form; wherein inside liner 1, interior circumferential winding layer 2, interior axial direction fibre layer 3 constitute the internal layer of pipe, and outer axial layer of fibers 5, outer circumferential winding layer 6, external protection 7 constitute the skin of pipe.
Wherein, inside liner 1: the effect of this layer ensures that glass reinforced plastic sand pipe under pressure can normally conveying material safely, makes the work of product long-term stability.This layer is made up of the surperficial felt of high resin content (resin content is in 70-92% weight) and short felt of cutting, and has the features such as wear-resisting, corrosion-resistant, leakage proof.
Interior circumferential winding layer 2 and outer circumferential winding layer 6: this is two-layer is the bearing bed of glass reinforced plastic sand pipe, which ensures the hoop tensile strength of pipe, hoop flexural strength and rigidity.This two-layer glass fibre continuous winding yarn by high strength, the mode adopting hoop to be wound around processes, and its resin content is between 25-35% weight.
Interior axial direction fibre layer 3 and outer axial layer of fibers 5: this is two-layer is the bearing bed of glass reinforced plastic sand pipe, which ensures axial tensile strength and the axial rigidity of pipe.This is two-layer cuts axial direction fibre or axial direction fibre fabric by short, and the mode adopting hoop to be wound around processes, and its resin content is between 45-65% weight.
Burning into sand layer 4: this layer is the bearing bed of glass reinforced plastic sand pipe, near the neutrosphere being arranged on pipe, Main Function provides axial compression strength and the toughness of pipe.It forms sandwich sandwich structure, riser hoop flexural rigidity with the glass fibre layer of high strength, increases tubular loading ability.This layer is disperseed to be mixed in resin by the double-component nanometer material (surface treated nano silicon and nm-class active calcium carbonate mixture) of 1-8% weight, obtain mixing nano-material modified resin matrix, again this resin matrix and silica sand are carried out action of forced stirring to mix, its resin content is between 15-18% weight.
External protection 7: this layer is the external protection coating of glass reinforced plastic sand pipe, has good corrosion-resistant, abrasion resistance properties.This layer is made up of the chopped strand of pure resin and high strength, and its resin content is between 70-100% weight.
The nano silicon that the present invention adopts adopts the precipitation method of chemical synthesis and improvement to produce.Anticipate the impurity removed in raw material aborning, then segmented acid-adding and sustained release agent, is generated by granule surface contral ion and grows, and destroys the interaction of silica particle surface hydroxyl, stops particle aggregation.Surface treated nano silicon, its particle diameter is 15-20nm, high purity more than 99.9%, there is good quantum size effect, small-size effect, skin effect and macro quanta tunnel effect, possess high-strength, high-ductility, high stability premium properties simultaneously, its about performance index as shown in the table:
The nm-class active calcium carbonate that the present invention adopts is that the raw material calcinings such as limestone are generated lime (main component is calcium oxide) and carbon dioxide, add water again and generate lime milk (main component is calcium hydroxide), and then pass into carbon dioxide, carbonization lime milk generates precipitation of calcium carbonate, obtains finally by dehydration, drying and pulverizing.This nm-class active calcium carbonate has the features such as ultra-fine, ultrapure, owing to effectively controlling crystalline form and size of grain in its production process, and carried out surface modification, therefore it has stereoeffect, has good dispersiveness again in resin, can improve the strengthening action of material.
See Fig. 2, double-component nanometer material mixing dispersing technology comprises the following steps: the first step, adopt the polar solvent methyl alcohol of low-steam pressure, as solvent carrier, nano silicon 8 is dispersed into just mother liquor, then nm-class active calcium carbonate 9 is also disperseed to enter, form nanometer just mother liquor 10.Second step, adds first for nanometer mother liquor 10 and resin 11 in vacuum stirring tank, heats under vacuum conditions to mixture, and abundant mix and blend, polar solvent is separated out from resin, final formation resin nano mixture 12.
After the resin matrix solidification adopting mixing nano-material modified, its intensity and toughness are significantly improved, and intensity increases by 50%, toughness increase about 75%, and cost of production is lower.
See Fig. 3, for the feature that resin nano mixture viscosity is large, present invention employs novel resin, silica sand mixed process, pass through VFC, continuous action of forced stirring is carried out to mixture, and improves burning into sand device, thus realize abundant, the Homogeneous phase mixing of nano-resin mixture and silica sand.First resin nano mixture 12 and silica sand 13 are carried out continuous stirring operation 14, afterwards the mixture after stirring is sent into burning into sand device 15 and carry out burning into sand operation.
Room development test display by experiment, adopt the resin of high strength and high tenacity, such as epoxy polyamide cured resin or vinyl ester resins, the resin mortar compression strength of general quartz sand graduation (as 20 order-40 order accountings 100%) can be met higher than 75Mpa when the resin content of 15-18%, but main Problems existing is that above-mentioned resin price is high, and it could be applied under being the condition of high corrosion resistant or other particular/special requirements.
By carrying out the composite of different proportion to the silica sand of variable grain diameter, illustrate that the impact of the level pairing compression strength of silica sand is larger, the intensity of the silica sand resin mortar of the strength ratio poor grain size distribution of the silica sand resin mortar of good grating exceeds more than 30%, and test result display adopts the compression strength under following grain composition to meet the demands:
| Particle size range | Quality accounting % |
| 10 order-20 orders | 45％ |
| 30 order-60 orders | 15％ |
| 70 order-80 orders | 15％ |
| > 90 order | 25％ |
| Add up to | 100％ |
But the grating of silica sand must size particles configure respectively, and part median particle diameter must be had all to cancel.And silica sand supplier is unstable to the mixture of silica sand, be easily occur that particle diameter is separated in transport with production.Found the grating of its grain composition non-predetermined by the burning into sand layer of released part pipeline, material mixing is simultaneously also uneven, causes push pipe intensity dispersion large.After testing, the product that same batch of material is produced, the peak of its compression strength and minimum can differ more than one times.
Below different resins mixture and the rear push pipe compression strength comparative trial forming burning into sand layer of silica sand mixing:
(1) resin 15 parts
Silica sand 85 parts: 20-40 order
Push pipe compression strength: 44.51Mpa
(2) resin 25 parts
Silica sand 75 parts: 20-40 order
Push pipe compression strength: 66.86Mpa
(3) nano modification resin compound 15 parts
Silica sand 85 parts: 20-40 order
Push pipe compression strength: 82.61Mpa
What deserves to be explained is, the nano modification glass reinforced plastic sand pipe in the present invention, not only can be used as push pipe, other pipelines such as excavation pipe can also be used as.
Claims (1)
1. a nano modification glass reinforced plastic sand pipe, it comprises internal layer, skin and burning into sand layer, it is characterized in that: described burning into sand layer is obtained by following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain modified resin matrix;
(2) described modified resin matrix and silica sand are uniformly mixed;
(3) wherein, described nano silicon is obtained by following steps:
A. the impurity in silica material is removed;
B. segmented acid-adding and corrosion inhibitor;
C. generated by granule surface contral ion and grow, destroying the interaction of silica ions surface hydroxyl, stoping particle aggregation;
Described nm-class active calcium carbonate is obtained by following steps:
A. raw limestone is calcined;
B. add water generation lime milk;
C. and then add carbon dioxide, carbonization lime milk generates precipitation of calcium carbonate;
D. dehydration, dry and pulverizing;
Dispersion mixing in described step (1) comprises the following steps:
A. adopt the polar solvent of low-steam pressure described nano silicon to be dispersed into just mother liquor, more described nm-class active calcium carbonate is also disperseed to enter, form nanometer just mother liquor;
B. first for described nanometer mother liquor and resin are added in vacuum stirring tank, under vacuum conditions to mixture heating, and abundant mix and blend, polar solvent is separated out from resin, final formation resin nano mixture;
Described polar solvent is methyl alcohol;
Nano silicon in described step (1) and/or the weight percentage of nm-class active calcium carbonate are 1-8%;
Weight resin percentage in described step (2) is 15-18%;
The particle level of described silica sand is according to the following ratio:
Particle size range is 10 order-20 object quartz sand particles, and quality accounting is 45%;
Particle size range is 30 order-60 object quartz sand particles, and quality accounting is 15%;
Particle size range is 70 order-80 object quartz sand particles, and quality accounting is 15%;
Particle size range is for being greater than 90 object quartz sand particles, and quality accounting is 25%.
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| CN201210172489.1A CN102691829B (en) | 2012-05-30 | 2012-05-30 | A kind of nano modification glass reinforced plastic sand pipe |
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| CN201210172489.1A CN102691829B (en) | 2012-05-30 | 2012-05-30 | A kind of nano modification glass reinforced plastic sand pipe |
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| CN102691829A CN102691829A (en) | 2012-09-26 |
| CN102691829B true CN102691829B (en) | 2016-04-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106082779B (en) * | 2016-06-22 | 2018-11-23 | 武汉理工大学 | A kind of resin mortar and preparation method thereof applied to FRPM pipe |
| CN106273540B (en) * | 2016-08-30 | 2018-04-10 | 民勤县威瑞环保有限责任公司 | A kind of processing method of the buried RPM of heavy caliber |
| CN106958696A (en) * | 2017-04-25 | 2017-07-18 | 广西北海跃达玻璃钢制品有限公司 | A kind of anti-extrusion glass fiber reinforced plastic sand-inclusion pipeline |
| CN106949320A (en) * | 2017-04-25 | 2017-07-14 | 广西北海跃达玻璃钢制品有限公司 | A kind of fiberglass sand inclusion aqueduct |
| CN107504286A (en) * | 2017-10-07 | 2017-12-22 | 江苏捷通管业科技有限公司 | A kind of new pvc pipe |
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| CN1560134A (en) * | 2004-02-24 | 2005-01-05 | 天津市金锚科技发展有限公司 | Preparing composite of modifing glass fiber reinforced plastics pultrusion section bar and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560134A (en) * | 2004-02-24 | 2005-01-05 | 天津市金锚科技发展有限公司 | Preparing composite of modifing glass fiber reinforced plastics pultrusion section bar and preparation method thereof |
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| 石灰石制备普通轻质及纳米碳酸钙的研究;赵东清;《万方中国学位论文全文数据库》;20110215;第30页 * |
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Effective date of registration: 20171211 Address after: 313199 Zhejiang city in Huzhou Province Economic Development Zone Changxing County Lu Hui Lu and four road intersection southwest corner of the Patentee after: Zhejiang Xinshi Technology Stock Co., Ltd. Address before: The 313199 Zhejiang Economic Development Zone in Changxing County Province, the four road and the southwest corner of the intersection of Lu Hui Lu Patentee before: Zhejiang Sinshi Pipe Stock Co., Ltd. |
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Granted publication date: 20160427 Termination date: 20180530 |